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Subject[PATCH 08/14] amd64_edac: carve out MCi_STATUS decoding
Date
The MCi_STATUS registers have most field definitions in common so decode
those in the general path.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
---
drivers/edac/amd64_edac.c | 53 ++++++++++++++++++++---------------------
drivers/edac/amd64_edac.h | 6 +---
drivers/edac/amd64_edac_dbg.c | 2 +-
3 files changed, 29 insertions(+), 32 deletions(-)
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index af08c9e..a691bb8 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -2242,7 +2242,7 @@ static void amd64_decode_bus_error(struct mem_ctl_info *mci,

if (ecc_type == 2)
amd64_handle_ce(mci, info);
- else
+ else if (ecc_type == 1)
amd64_handle_ue(mci, info);

/*
@@ -2257,11 +2257,10 @@ static void amd64_decode_bus_error(struct mem_ctl_info *mci,
}

void amd64_decode_nb_mce(struct mem_ctl_info *mci, struct err_regs *regs,
- int handle_errors)
+ int handle_errors, int ecc)
{
struct amd64_pvt *pvt = mci->pvt_info;
u32 ec, xec;
- int ecc;

if (!handle_errors)
return;
@@ -2280,21 +2279,6 @@ void amd64_decode_nb_mce(struct mem_ctl_info *mci, struct err_regs *regs,
pr_cont(", core: %d\n", ilog2((regs->nbsh & 0xf)));
}

- pr_emerg(" Error: %sorrected",
- ((regs->nbsh & K8_NBSH_UC_ERR) ? "Unc" : "C"));
- pr_cont(", Report Error: %s",
- ((regs->nbsh & K8_NBSH_ERR_EN) ? "yes" : "no"));
- pr_cont(", MiscV: %svalid, CPU context corrupt: %s",
- ((regs->nbsh & K8_NBSH_MISCV) ? "" : "In"),
- ((regs->nbsh & K8_NBSH_PCC) ? "yes" : "no"));
-
- /* do the two bits[14:13] together */
- ecc = regs->nbsh & (0x3 << 13);
- if (ecc)
- pr_cont(", %sECC Error", ((ecc == 2) ? "C" : "U"));
-
- pr_cont("\n");
-
ec = ERROR_CODE(regs->nbsl);
xec = EXT_ERROR_CODE(regs->nbsl);

@@ -2343,18 +2327,33 @@ void amd64_decode_nb_mce(struct mem_ctl_info *mci, struct err_regs *regs,
void decode_mce(struct mce *m)
{
struct err_regs regs;
+ int ecc;

- if (m->bank != 4)
- return;
+ pr_emerg("MC%d_STATUS:\n", m->bank);

- regs.nbsl = (u32) m->status;
- regs.nbsh = (u32)(m->status >> 32);
- regs.nbeal = (u32) m->addr;
- regs.nbeah = (u32)(m->addr >> 32);
+ pr_emerg(" Error: %sorrected, Report: %s, MiscV: %svalid, "
+ "CPU context corrupt: %s",
+ ((m->status & MCI_STATUS_UC) ? "Unc" : "C"),
+ ((m->status & MCI_STATUS_EN) ? "yes" : "no"),
+ ((m->status & MCI_STATUS_MISCV) ? "" : "In"),
+ ((m->status & MCI_STATUS_PCC) ? "yes" : "no"));

- amd64_decode_nb_mce(mci_lookup[0], &regs, 1);
-}
+ /* do the two bits[14:13] together */
+ ecc = m->status & (3ULL << 45);
+ if (ecc)
+ pr_cont(", %sECC Error", ((ecc == 2) ? "C" : "U"));

+ pr_cont("\n");
+
+ if (m->bank == 4) {
+ regs.nbsl = (u32) m->status;
+ regs.nbsh = (u32)(m->status >> 32);
+ regs.nbeal = (u32) m->addr;
+ regs.nbeah = (u32)(m->addr >> 32);
+
+ amd64_decode_nb_mce(mci_lookup[0], &regs, 1, ecc);
+ }
+}

/*
* The main polling 'check' function, called FROM the edac core to perform the
@@ -2365,7 +2364,7 @@ static void amd64_check(struct mem_ctl_info *mci)
struct err_regs regs;

if (amd64_get_error_info(mci, &regs))
- amd64_decode_nb_mce(mci, &regs, 1);
+ amd64_decode_nb_mce(mci, &regs, 1, 0);
}

/*
diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
index 7c9138e..31cff33 100644
--- a/drivers/edac/amd64_edac.h
+++ b/drivers/edac/amd64_edac.h
@@ -626,8 +626,6 @@ static inline struct low_ops *family_ops(int index)
#define F10_MIN_SCRUB_RATE_BITS 0x5
#define F11_MIN_SCRUB_RATE_BITS 0x6

-void amd64_decode_nb_mce(struct mem_ctl_info *mci, struct err_regs *info,
- int handle_errors);
+void amd64_decode_nb_mce(struct mem_ctl_info *, struct err_regs *, int, int);

-int amd64_get_dram_hole_info(struct mem_ctl_info *mci, u64 *hole_base,
- u64 *hole_offset, u64 *hole_size);
+int amd64_get_dram_hole_info(struct mem_ctl_info *, u64 *, u64 *, u64 *);
diff --git a/drivers/edac/amd64_edac_dbg.c b/drivers/edac/amd64_edac_dbg.c
index bcb4e2e..d6b8a35 100644
--- a/drivers/edac/amd64_edac_dbg.c
+++ b/drivers/edac/amd64_edac_dbg.c
@@ -24,7 +24,7 @@ static ssize_t amd64_nbea_store(struct mem_ctl_info *mci, const char *data,

/* Process the Mapping request */
/* TODO: Add race prevention */
- amd64_decode_nb_mce(mci, &pvt->ctl_error_info, 1);
+ amd64_decode_nb_mce(mci, &pvt->ctl_error_info, 1, 0);

return count;
}
--
1.6.3.3



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